How was your experience in the BARC interview?

Updated on : January 20, 2022 by Adam Sharp



How was your experience in the BARC interview?

It will be very long. So please bear with me for the next 15-20 minutes.

Interview date: 15–06–2018

Branch: Mechanical Engineering

Interview location: Anushaktinagar, BARC Mumbai

Interview time: 5:00 p.m. to 6:20 p.m.

Interview Result: Selected as OCES Trainee at NFC-HWB Hyderabad.

Having scored 71 out of 100 points in GATE 2018 (Mechanical), I received offers for M.Tech from new IITs such as IIT Patna, IIT Jodhpur and IIT Indore through COAP, but still ran out of PSU offers. I preferred a job over M.Tech in the new IITs and was therefore rigorously looking for it. A good afternoon, just before

Keep reading

It will be very long. So please bear with me for the next 15-20 minutes.

Interview date: 15–06–2018

Branch: Mechanical Engineering

Interview location: Anushaktinagar, BARC Mumbai

Interview time: 5:00 p.m. to 6:20 p.m.

Interview Result: Selected as OCES Trainee at NFC-HWB Hyderabad.

Having scored 71 out of 100 points in GATE 2018 (Mechanical), I received offers for M.Tech from new IITs such as IIT Patna, IIT Jodhpur and IIT Indore through COAP, but still ran out of PSU offers. I preferred a job over M.Tech in the new IITs and was therefore rigorously looking for it. One fine afternoon, just before the day of the ISRO written test, the BARC written tests were declared and I was glad to hear that I made it to the BARC interview. But the battle is not yet half won, as the interview is the biggest obstacle to selection at BARC. The interview is quite conceptual and the interviewers delve into the concepts to the point where you give up. The reason is not to see how much you know, but how much you can think. The interview usually lasts between 1, 15 and 2 hours if your chances of selection are high. but there were candidates who were interviewed for 1.30 hrs, even so they were rejected and some were interviewed for 1 hrs and were selected. The selection depends solely on your performance during the interview. Your work experience, written exams / Gate results, your family background, your B.Tech university (even if it is B.Tech from IIT), the formal suit you wore for the interview, and your excellent command of the English language would give you any advantage. . . You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. 30 hours were still rejected and some were interviewed for 1 hour and were selected. The selection depends solely on your performance during the interview. Your work experience, written exams / Gate results, your family background, your B.Tech university (even if it is B.Tech from IIT), the formal suit you wore for the interview, and your excellent command of the English language would give you any advantage. . . You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. 30 hours were still rejected and some were interviewed for 1 hour and were selected. The selection depends solely on your performance during the interview. Your work experience, written exams / Gate results, your family background, your B.Tech university (even if it is B.Tech from IIT), the formal suit you wore for the interview, and your excellent command of the English language would give you any advantage. . . You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. The selection depends solely on your performance during the interview. Your work experience, written exams / Gate results, your family background, your B.Tech university (even if it is B.Tech from IIT), the formal suit you wore for the interview, and your excellent command of the English language would give you any advantage. . . You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. The selection depends solely on your performance during the interview. Your work experience, written exams / Gate results, your family history, your B.Tech university (even if it is B.Tech from IIT), the formal suit you wore for the interview, and your excellent command of the English language would give you any advantage. . You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. the business suit he wore for the interview and his excellent command of the English language would give him an advantage. You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. the business suit he wore for the interview and his excellent command of the English language would give him an advantage. You can give an interview in any language the panelists understand. My interview took place in English, Hindi, and Marathi (and an informal discussion in Sanskrit with one of the panelists). It is here that future scientists would be selected from the great crowd. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC. My interview lasted 1 hour and 20 minutes. Here is my interview experience at BARC.

I was the last candidate from the Mechanics branch to be interviewed in 2018. I interviewed in Panel No.2 that had Panelist-1 (P1) sitting on my left, P2, P3 (who was Director), P4 sitting on the other side of the table and P5 sitting to my right.

Me: Can I come in sir?

Q5: Please come in and sit here.

I thanks!

Before I could sit down, the Director asked while looking at my application form,

Director: His last name is "Kurkure" or "Karkare".

Me: Sir, it's "Kurkure"

Director: Is that Kurkure brand related to you in any way?

Me: Sir, one of my distant relatives was working as a Product Manager at the FritoLay company when it was running at a great loss. It was because of his surname that the company decided to launch a new product "Kurkure" in 2000.

Director: And the company started to generate profits?

Me: Yes sir.

Director: Great!

They were all smiling.

Director: So, Shreeraj, how long have you been waiting in the waiting room?

Me: Sir, I showed up at 11 a.m. M. For the verification of documents, which took place at 11.30 a.m. M. Since then, I have been waiting around 5.30 am for the interview.

Q2: Where do you come from?

Me: Thane (near Mumbai).

Director: Did you have a proper lunch?

Me: Lord, today is my fast.

Director: Okay.

Principal: Passed in 2016. What was your B.Tech College?

I said.

Principal: Didn't you get job placement on campus?

Me: Sir, the profiles that the companies offered were all sales with a very low salary. So I didn't and decided to prepare for Gate.

Director: What have you been doing since 2016?

Me: I completed a year of apprenticeship training at HPCL last year and now I am studying and also looking for work.

Director: It's okay, Shreeraj. Now take this sheet of paper and write 3-4 topics that you are comfortable with in short.

Before starting to write the names of the subjects, P5 interrupted,

Q5: How did HPCL recruit apprentices in training?

Me: Sir, through a written test and an HR interview.

Q5: Not through GATE?

Me: No sir.

Meanwhile, I forgot how many songs the Director asked me to write. I had prepared 5 tracks, but before writing the 5 tracks, I asked the director again how many tracks I should write.

Director: Write 3-4 topics.

Q5: You can write any number 4, 5, 6, 7, 8, 9, 10 you want.

Me: (Without acting smart, I decided to write only 3 songs).

  1. Basic TD (basic thermodynamics)
  2. HT (heat transfer)
  3. SOM (resistance of materials)

Q5: Only 3.? Ek aur subject bolo yaar. (Please say one more topic)

Me: 4. Linear vibrations in 1 DOF.

P2: Okay. Write only vibrations.

Me: (I returned the paper to the Director).

And now the barrage of questions began ...

Director: At HPCL, you must have seen tanks.

Me: Yes sir.

Director: What are the different types of tanks?

Me: Sir, to transport fuel, oval tanks are used. For underground storage purposes, cylindrical tanks are used. For surface storage, bullet and spherical tanks are used.

Director: Which is better and why?

Me: spherical because the hoop tension is less for the same diameter.

Director: Is that all?

Me: Yes sir.

Director: There are 4 reasons why you told one.

I thinking ...)

Q2: What are the different types of stresses in tanks?

I: ring tension, longitudinal tension and radial tension which can be neglected if the tank is thin.

Q2: What is the formula for the stresses in cylindrical and spherical tanks?

I said.

Director: Give me 3 other reasons for my question.

Me: (After 30 seconds) Sir, for sphere, for the same volume, the surface area is less, so there will be less heat loss by convection to the surroundings. (After 30 seconds) Also, since the surface area is smaller, less steel is required to make a spherical tank than a cylindrical tank. This will save purchasing costs and also manufacturing costs.

Q4: But do you think making a sphere is easier than a cylinder?

Me: (thinking for 10 to 15 seconds) No mom.

Q4: Why?

Me: Mam, the cylinder can be easily manufactured by seamless extrusion or rolling or by tube drawing process. But making sphere will be difficult.

Director: But you just said that the manufacturing cost will be lower.

Me: Sorry sir, the manufacturing cost will be higher for the dial, but the benefits we get from the dial, such as less hoop tension, less convection heat loss, and less steel required, will be worth the investment.

Q2: If spherical tanks are better, why are cylindrical tanks used for underground fuel storage in gasoline pumps?

Me: Sir, for underground fuel storage, it will be better if we use horizontal cylindrical tanks because for the same volume, it is easier to dig an earth pit that is less deep and wider than less wide and deeper or equal in width. and depth as required for spherical tanks.

Director: Good!

Q5: Can you derive the formula for ring tension in a thin cylindrical shell?

Me: I drew half of the tank. Its front view and side view both.

P5: This is the first angle projection or the third angle projection.

Me: Sir, this is the third angle.

P5: Okay. Now derive by the integration method.

Me: (derived).

P5: Good.

Director: A cylindrical tank with a volume of 200 liters must be kept at a pressure of 2 bar by adding water. How much mass of water will be required?

Me: (thinking for 15-20 seconds) Sir, we can use the ideal gas equation.

Q1: We are using water. It is not an ideal gas.

Sorry. Sir, we can consider the volume modulus of the tank material and use, the volume modulus is equal to the average pressure divided by the volumetric strain. From this formula, we can obtain a change in the volume dV and therefore the total volume of water. Then the mass can be found by m = Density x Volume

Q2: Suppose the tank is rigid.

Me: Thinking for a minute. After receiving clues, I solved the problem.

Q4: Design a cylindrical tank.

Me: Mom, thick or thin?

P4: Slim.

I thinking….

Director: What will be the first parameter that you will consider?

Me: Sir, we can design it based on strength criteria or volumetric deflection criteria.

Manager: What criteria will you use to store gasoline in an underground tank at the gas pump?

Me: Strength criteria.

Director: Design the tank.

Me: First we select material like steel. Its Young's modulus is 210 GPa. The elastic limit is 250 MPa. Then, using the hoop tension formula, we can find the thickness of the tank.

(Before proceeding to find the thickness, the Director interrupted and, putting the tank design aside, entered SOM.)

Director: How do you find Young's modulus and elastic limit?

Me: Sir, from Data Book.

Director: And how did the Data Book authors find it?

Me: From the Stress-Strain diagram.

Director: Where did you get the stress-strain diagram?

Me: Performing tensile test experiments on the universal testing machine.

Director: Explain.

Me: Sir, should I draw a stress-strain curve?

Director: Yes and explain all the points.

Me: I drew and explained.

Director: How to find the young modulus and the elastic limit from this diagram?

Me: The slope of the initial linear line is Young's modulus and the elastic limit is the lower elastic limit.

Q2: Why not the upper yield strength?

Me: (Explained the dislocation theory and the cortrell atmosphere).

Q4: After making out, you are failing with lower stress. Why not fail before kissing with the same stress?

Me: Sir, actually the fracture stresses are higher. (The difference between engineering stress and true stress is explained later.)

Q4: What stress will you use to design a beam?

Me: Engineering stress. Because it is easy to measure and also provides the designer with conservative values ​​for the dimensions of the beam.

Q1: For some materials, the elastic limit is not visible. So how do you find the yield point?

Me: Explanation of the stress test concept.

Director: If the mild steel is loaded to a point after the yield point but before the last point, how will it return? Show in the stress-strain diagram.

Me: shown.

Q1: Check the elastic deformation and plastic deformation.

Me: Marked.

Director: (Shaded the area under the stress-strain diagram up to the yield point). What does this represent?

Me: Effort of energy.

Director: What is the specific name?

Me: (thinking for 4-5 seconds) Resilience.

Director: Is it important? If yes, where?

Me: Represents the energy absorbed by the body up to the performance limit when the external shock load hits the body.

Q5: What if the external load is applied slowly? Will it continue to absorb the energy of the stress?

Me: Yes sir. It will continue to be called resilience.

Director: In which design is resilience important?

Me: (thinking for 10-12 seconds) Springs.

P5: Good.

P2 started with thermodynamics.

Q2: Explain the operation of the Thermal Power Plant.

Me: Explained.

P2: (I asked all the possible cycles ever recorded in the history of thermodynamics. Some cycles I heard for the first time in life).

Me: I answered 50% of them along with the graph. (Rankine, Carnot, Stirling, First Ericson, Second Ericson, Atkinson, Lenoir, Otto, Diesel, Dual Cycle, etc.)

Q2: Why is Rankine preferred even though Carnot is more efficient? There are 4 reasons for this.

Me: Answered.

Q4: (Gave a POV job type problem and asked me to draw a VP graph). There is a piston that has some mass and is in equilibrium inside a cylinder that contains gas at a certain pressure. Now the heater comes on and the piston moves up and hits the stopper. The heater stays on for some time after hitting the plug. The heater is then turned off and a large impact force is applied to the piston to return it to its original position. Draw a PV chart and name all the processes involved.

Me: Done. (After receiving many clues).

Q5: (He drew an uneven trapezoid with two vertical faces from areas 2A and A and held at pressure P.) What are the forces acting on two faces?

Me: 2PA and PA.

Q5: It means that there will be a net force in one direction.

Me: Yes sir.

Q5: So, just by holding the uneven chamber at a certain pressure, it will start to move. So we should stop using fuel to run our cars.

Me: (I got confused. Thinking for a minute) The pressure P is an average pressure, but the absolute pressure at different points inside the chamber will be different. It will be less close to the large vertical face and closer to the small vertical face, thus keeping the forces equal and the body in balance.

Then P1 started with Vibrations.

Q1: Since you said 1 DOF, I am giving a very basic problem. (He drew a simple swinging pendulum.) What is the name of the movement?

Me: simple harmonic movement.

Q1: What is specific about SHM?

Me: Acceleration is proportionally negative to displacement.

Q1: You were asked to draw all possible graphs for the swinging pendulum such as PE versus time, KE versus time, Total energy versus time, frequency versus time, Period of time versus time, velocity versus time, and acceleration versus time.

Me: It took me a long time to draw all the graphics.

Q1: Replacing the solid pendulum ball with a hollow one that contains water leaking from a hole drilled in the bottom. You were asked to redraw all the previous graphs.

Me: I drew graphics with a lot of errors. But with your help, I was able to draw them all.

Q4: A container filled with 1 L of water was removed and kept on the mass balance instrument. What is reading?

Me: 0.998 kg at room temperature.

Q4: You inserted a solid spherical ball suspended from the ceiling with a string into the water without touching the walls of the container. The mass of the ball is also 0.998 kg. Will the reading change?

Me: No Mom.

Q4: Replacement of the rope with spring balance. What will the spring balance reading be?

Me: Before the dive, it will be 0.998kg, but after the dive, it will decrease.

Q4: Why and how much?

Me: Because the buoyant force acts in an upward direction on the ball. It will decrease by an amount equal to (density of water xgx volume of ball).

Q5: So you say the spring balance will read less than 0.998kg, but the mass balance which container is stored in will read exactly 0.998kg?

Me: (I got confused.) With little confidence, I said, "Yes, sir."

Q5: So where did the mass difference go?

Now my brain stopped working because I was completely exhausted. The interviewers also noticed this from my facial expressions. And they too were exhausted.

I thinking….

Director: Chodo jane do. Bohot sataya bichare ko. (Okay, quit. We have bothered him a lot).

Q5: (He started to get into the concept of massive defect).

P1 interrupted and said to P5: The massive defect is a nuclear engineering concept. He is from mechanics. You must not know.

You roughly knew that the mass defect is given by Newton's law of chemical reactions E = mc ^ 2 and occurs when mass is converted to thermal energy during exothermic reactions. However, I did not say this as P5 would have started to dig into the concept and was not in a position to think and answer any more questions. By this time I had lost all my energy.

Director: Okay. You can go. Thanks.

P1, P4: Thank you.

Q5: After you get home, see what mistake you made in this problem.

Me: Okay sir.

Q2: We may see each other soon!

Me: I said thank you everyone.

The results were released on June 28 in the afternoon. Forty-nine mechanical students were selected out of the 802 who came forward for the interview. And my name was on serial number 39. Now, I am awaiting a medical exam and will be joining BARC on August 1, 2018 as a Scientific Officer Trainee.

This was my general experience at the BARC interview. By the way, I wrote as long and detailed as possible so that the next generation of BARC scientists can understand the importance of the BARC interview and get a sense of how it is very different from the PSU interviews.

Thanks.!

* Long response alert *

It was an unforgettable experience. Not just the interview itself, but the adventure above.

My interview was scheduled for May 19, the day after my birthday. I had to board a train from Jhansi to CST on May 17th around 8pm. The train was initially delayed for around 6 hours. I also had to make a trip to JHS from my hometown Shivpuri, which takes around 2 hours, so despite knowing that the train is late, I had to leave early.

The train was still late. I started getting birthday wishes at the JHS station. Who spends a birthday at the train station waiting inde

Keep reading

* Long response alert *

It was an unforgettable experience. Not just the interview itself, but the adventure above.

My interview was scheduled for May 19, the day after my birthday. I had to board a train from Jhansi to CST on May 17th around 8pm. The train was initially delayed for around 6 hours. I also had to make a trip to JHS from my hometown Shivpuri, which takes around 2 hours, so despite knowing that the train is late, I had to leave early.

El tren seguía retrasándose. Empecé a recibir deseos de cumpleaños en la estación de JHS. Quien pasa un cumpleaños en la estación de tren esperando indefinidamente el tren. El tren finalmente llegó a JHS alrededor de las 11 de la mañana.

B’day wishes kept on pouring. I was like… meh… what a day.

The train was scheduled to reach Mumbai on 18th May at 4 PM, and all my plans to party after reaching Mumbai started to die.

Nevertheless after a total delay of around 19 hours, it finally reached Mumbai on 19th May at 11AM, which was my reporting time as well. I didn’t even shave, nor took bath, thanks to the delay. Changed to formal clothes in the train itself. Since I was familiar with Mumbai, I quickly booked a cab, reached Anushakti Nagar, registered myself and got the last slot of the day.

I was like, this is the worse that can happen. Little did I know what was to follow.

Tired of 2 day journey, finally I was called in for at around 5:30 PM in the interview room. The panel had 6–7 members.


I entered, they made me get comfortable and this is how the interview went-

M1: So you are the last candidate, do you feel tired.

Me: Sir, I have enough energy to face this interview.

M1: What is the meaning of Namit?

Me: (initially surprised, since BARC is not known to ask such questions) It means one who is modest, bowed down.

M1: What took you two years to reach here?

Me: I worked for one year then took a study break for another year.

M1: Where did you work and what did you do there?

Me: I worked for Thornton Tomasetti, here in Mumbai itself. Reviewed shop drawing for steel structure connections.

M1: Connections, Interesting!

I immediately figured out from the devilish smile on his face, that I am going to be grilled. Steel was anyways my weak area.

M1: What are some types of connections?

Me: Answered.

M1: How do you make a shear connection between two beams if they are different in sizes?

Me: (My experience came in handy) Sir, we provide coping of flanges at top and if required at bottom and then insert a shear tab by either bolting or welding.

He seemed impressed.

M1: How do we design compression member?

Me: Started to answer the standard procedure mentioned in IS Code, the stress reduction factor, the slenderness ratio etc.

M1: (Interrupting me) Arre kitaabi baatein na karo… basics pe jao… :D Assume a simply supported column and the deflection at mid point as delta and now derive.

Me: (initially blank) started with Eigen value solution. Got stuck at the solution of the deferential equation. Tried hard to recall, couldn’t.

He kept helping, giving hints, I couldn’t answer. After some more questions from steel and finding out my pathetic condition, asked me lets start with another subject. RCC?

I said fine.

Passed on to the next member.

M2: Made a overhanging beam on both sides, and a loading on it. Asked me how would I arrive at the reinforcement detail of the beam. The only parameter known was the total length of the beam.

Me: I drew BMD, started to answer him, that wherever hogging and sagging is occurring, will provide reinforcement accordingly.

Him: No, tell me how will to arrive at the beam size, reinforcement etc.

Me: Sir, since the beam is simply supported, by IS Code’s deflection criteria, we will assume L/D < 20 and find a depth and start from there.

Him: (Interrupting me) Where did L/D < 20 come from? What is the logic behind the magical figure 20?

Me: (Pairo tale zameen khisak gayi) Sir, may be due to large deflection, there may be aesthetic reasons.

Him: (started laughing and telling other panel members) ye bol raha hai aesthetic reasons hain :P

Him: Iska logic hai, can you guess?

Me: tried many answers and with each answer he had a counter logic. Gave up _/\_

Him: accha chalo aage bado.. beam design karo.

Me: Sir, then by flexure formula, we will equate tension and compression forces.

Him: Derive Flexure formula.

Me: Derived.

Another member interrupting (M3): Why is strength of concrete taken as 0.67 fck?

Me: Answered with first converting the cube strength to cylindrical strength by a factor of 0.85, then applying a size factor of 0.8 to fck

Him: Even after applying these two factors, what is the need of FOS of 1.5?

Me: Sir to account for the invariability in material proportion, since concrete is heterogeneous.

He countered, I don’t remember. I again gave up after several answers.

Meanwhile the first member: “Iska beam design hua ya nahi”

He finally allowed me to finish, cross questioning, which I don’t remember now.

They also asked me to draw Moment-Curvature curve and P/M interaction curve. I drew both. They then asked me if I know how is it derived. I failed to answer both.

Now they asked another member to ask me from Soil.

M4: He draw a retaining wall kind of structure and a truck pushing that wall, asked me derive the weight of the truck required to safely hold the wall with a factor of safety 2. He also provided with friction coefficient.

Me: I derived it successfully. He seemed satisfied.

M4: He drew a flow net. Gave the length of the sheet pile, asked me pressure at different point in the flow net, both under static and seeping state.

Me: I answered satisfactorily.

After 40–45 minutes of grilling my interview ended.

Before leaving Member 1 asked me - So Namit, was your interview modest enough? (Taking a dig at his first question about the meaning of my name)

Me: (with a smile) Sir, more than I had expected.

And left the room.


I felt extremely grilled. Thought this could be the worst thing one could ask for on his 25th b’day.

Went straight to my friend’s hostel. Dozed off straight away. Next day they arranged a surprise party for me.

Roamed around Mumbai for next two days, for I love this city and forgot I ever gave an interview.

Months later, got a message on fb - “Congrats dude you got selected!”

I was like, were they high!

Thank you for reading.

-NJ

My interview was scheduled for June 9, 2016, night shift. I purposely chose this date as I wanted the interview to take place after the ESE exam, which was June 2, and before the NPCIL exam, which was June 16-17. Giving an interview after ESE was beneficial as the whole curriculum was fresh in my mind, although we are supposed to prepare 4-5 subjects only, but sometimes the panelist can ask random questions about materials science and ESE preparation can be helpful

After ESE I had almost a week to prepare for the interview, which I thought was enough, as I also prepared for ESE.

SUBWAY

Keep reading

My interview was scheduled for June 9, 2016, night shift. I purposely chose this date as I wanted the interview to take place after the ESE exam, which was June 2, and before the NPCIL exam, which was June 16-17. Giving an interview after ESE was beneficial as the whole curriculum was fresh in my mind, although we are supposed to prepare 4-5 subjects only, but sometimes the panelist can ask random questions about materials science and ESE preparation can be helpful

After ESE I had almost a week to prepare for the interview, which I thought was enough, as I also prepared for ESE.

My experience in the interview:

Comencé el 7 de junio desde Delhi. Estaba acompañado por uno de mis amigos de la universidad que también fue seleccionado para la entrevista. Tomamos el correo dorado del templo de la estación de NZM, ya que este tren cumplía perfectamente con los horarios que queríamos.

we reached Dadar station at 5 AM on 9th June itself.(i didn't wanted to get there anytime early, some people though prefer reaching a day before the exam). From there we headed to the interview venue,anushaktinagar. Reached their around 7 a.m. we were literally very tired as the entire journey we used in discussing probable questions,( which i personally believe was very useful.its better to discuss the questions with someone of credibility, because even knowing some of the last year questions we are still doubtful about their answers. )took lodging at the NBH hostel and finally decided to extend our discussions till 11am, after which we had to go document verification where in you have to literally wait for around 2 hours. My interview was scheduled at 3p.m. so after lunch we decided to take a power nap for an hour. we slept without putting an alarm and woke up 3:30. we missed our interview call twice, yes twice and we were not even tensed :D as we were least optimistic about our interviews. hurriedly we went to the venue from the hostel and were told to wait until 5. i told them to schedule it as soon as possible as i had to catch the flight for Hyderabad( my Bharat dynamics ltd. interview was scheduled the next day) and i knew they will do it and fortunately i just had to wait for 5 mins outside, waiting for my turn. in the process of pacifying, heard the bell rung(signalling me to go inside)

well they started off pretty casually, they do intentionally just to pacify us as

chairman: saurav you look so tired .Not ample sleep?

me: no sir, i am good(with a sleepy face)

chairman: tell me where are you from, which college, when did you pass out..general types questions.

chairman: what were your final year subjects?

me: i was seriously blank not able to recall like who remembers the subject taught in which semester..:D

chairman: so this is your second interview of barc, so you know how it goes, lets get started. write and speak 4 favorite subjects

me: thermodynmics, fluid mechanics, SOM , heat transfer

chairam: everyone’s favorite by default.:D

panelist-1- - two compartments initially separated have nitrogen and argon. how to calculate final temp and pressure after the seperation is removed.

next subsequent 5–6 questions on this only .

how const pressure process is realized. tell a practical example other than i.c engines.

if you are adding heat to the cylinder, piston is moving upwards then how it is const pressure process?

fluid mechanics:

two containers one with rectangular crossection and other with trapezium and hole is created at the bottom. draw- h-level of water in container with time. next subsequent question on this by modifications like what will happen if i incline the arms(slant height) of trapezium more. what changes in graph etc.

a flow is taking place in a pipe. and 5 piezometers attached along its length.indicate the level of water. confusing me on whatever i say.

SOM- chairman: L shaped beam and point loads in different directions at the end draw free body diagram .draw SFD and BMD of each part.

what is neutral axis. what if i take away material near to the neutral xis.

vertical cantilever beam deflection due to self weight at any point derive.

heat transfer-

easy questions on heat transfer like critical radius.

natural convection. which will dissipate more heat when heated inclined or vertical or horizontal

forced convection const wall temp and const heat flux temperature profiles.

After all the four subjects got over they started again with fluid mechanics( this was the point i started thinking- they are really serious about me)

a rectangular vertical loop with a pump in it and asked me to write Bernoulli equation at different points. can the flow happen without pump.

force required to keep a floating body forcefully submerged by hand inside water.

At this point of time i was really confident about my selection. then they told ok saurav this will be last question for you.

thermodynamic graph plotted on p-v asked me to plot it on t-v.for this i told and convinced him that by physics i can plot he graph,and explained what the process might be going on. but he asked to get exact profile and coordinates, which i wasnt able to think that time. i asked for water..and the panelist himself got out and came with a glass of water and said” hum puchenge aur pani pila pila k puchenge”. hey even gave me 2 mins to think calmly, unfortunately it didn't strike . they told me, its your take away question. think at home.

chairman: ok saurav thats all for the interview, you may leave now.

and as soon i reached the door, the answer struck…i asked them, sir can i answer it now…all of them laughing, told NO and i came out of the room smiling..:D

i didn't answer the last question properly but somewhere i knew i was going to be selected.

well the point is they dont expect you to answer everything. even if you are not able to answer few or most of them, doesnt matter. but when they drop hints you have to catch them , respond and think.

How to prepare/how did i prepare?

before starting off with books, you have to first understand and analyse how you are going to prepare ie source& strategy. For this i will suggest, be in contact with your college seniors or other seniors who have faced the interview(not necessarily cleared it) , just to get a rough idea of the type and level of questions asked, which topics to cover, how to approach. after this you will understand the type of preparation you need.once you have done this you will start realizing that BARC interview is not like conventional PSU types question where you will be bombarded with 10–15 theoretical questions, of which most of them data based . ON the contrary the questions asked will be highly conceptual. They will start from the basics and will go in every detailing of it. some concepts which we take for granted and not give enough thought process on it, everything is tested. so this all about, how the interview is going to be.

how to start/how did i start?

Now at this juncture you must understand this, that every year more than thousand people are called for interview from a single branch, panelist are human being, they cant frame seperate questions set for each candidate, some questions are bound to repeat. so contact people who have faced the interview, ask them their interview questions and collect all those questions. one good source can be the BARC OCES/DGFS page on facebook. lot of questions can be found there. Foe mechanical you can find som questions on the Facebook page of some madeeasy teachers(amrinder singh sir-thermo). though i didnt join any coaching but i used to follow them. some of the questions can be found on quora as well. so collect as many problems you can.Now please understand the purpose of question collection is not, that you just prepare these questions only, but these questions will govern your preparation.Its very likely that one question may repeat as well, But make note that, only the intial question may get repeated and subsequent questions will be based on what you answer. so there is no guarantee that, even you have prepared for a similar setup questions, but their subsequent questions my change for the given type of problem.

Once you collect all the questions go for textbook reading. By textbook reading i don’t mean you complete the full book. By now you must have got the idea of what to read- some concepts are repeatedly asked, or some concepts have really good practical implications, or some concepts or derivation which you feel can be asked.just like what an interview preparation approach should be.

For mechanical some question are really their favorite. And their is high probability that a part or may be the full question gets repeated.

thermo-

piston cylinder arrangement with springs and stoppers and whatever you can think of.

Two compartments with gases filled-question like to calcultae final temp pressure, mixing etc.

usually people saying thermo gets their first question on this setup.( i got on two compartment system)

Also, a similar analysis can be done on another topic. This is how you should prepare.

Thank you.

happy preparation :)

So here I am writing my most difficult but the best interview experience of my life, BARC.

DATE - MAY 31, 2018

PLACE - ANUSHAKTI NAGAR, MUMBAI

BACKGROUND: I was graded through a written exam, but I was also ranked 587 in GATE - 2018. So there were also several PSU interviews going on and I was having my ONGC interview on June 1 at DELHI, I was also an ESE applicant - 2018 so on June 2nd I had a mock test at Made Easy Bhopal. So it was going to be three consecutive days in three different cities. He was excited but also concerned because the BARC interview is said to be the inte

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So here I am writing my most difficult but the best interview experience of my life, BARC.

DATE - MAY 31, 2018

PLACE - ANUSHAKTI NAGAR, MUMBAI

BACKGROUND : I was qualified through written examination , but I was also having 587 rank in GATE - 2018 . So various PSU interviews were also going on and I was having my ONGC interview on 1st June in DELHI , Also I was ESE - 2018 aspirant , So on 2nd june I was having mock test in Made Easy Bhopal. So it was going to be three consecutive days in three different cities. I was excited but also worried because BARC interview is said to be toughest technical interview in INDIA.

So I went to MUMBAI , one day before the interview , Stayed in hostel and reading some previous questions asked to my friends , which didn’t helped because questions were entirely different from previous candidate.

Next day I went to the document verification , after which we were given a light breakfast and then I was asked to sit outside a room and wait for bell and then enter the room.

I was first candidate to be interviewed that day.

IN TIME : 10:55 AM

As I was told to how to do wishing and behave formally in interview I started with a good morning and asked to sit , they said “ make yourself as comfortable as you can , so keep in mind there is no marks for HR.

There were 4 members in my panel including one chairman all were having some allocated subjects to ask.

ABBREVIATION

CHAIRMAN - CH

SECOND MEMBER - M2

THIRD MEMBER - M3

FOURTH MEMBER - M4

It started with a general introduction , they asked

MY WHOLE INTERVIEW WAS IN HINDI BUT I AM WRITING IN ENGLISH , SO THAT EVERYBODY CAN UNDERSTAND.

Kaha se aae ho? (Where are you from?) Kaise aae ( Which mode of travel) , kab aae ( when did you came to mumbai) , naashta kara ( had breakfast) .

CH : You are 17 pass out , were you doing a job or not ?

ME : No sir I was preparing for GATE.

CH : You have appeared for any interview before.

ME : YES sir , ISRO , but not selected in final list.

CH : Any particular mistake you have done in interview and you observed.

ME : Yes sir , They asked me about optimisation of beam in space and I was confused with the question , so I was not able to answer it properly.

CH : OK

THEN STARTED THE MAIN INTERVIEW.

PLEASE WRITE YOUR FAVOURITE SUBJECTS , AND THEY SHIFTED A PAPER TOWARDS ME.

ME : STRENGTH OF MATERIALS , FLUID MECHANICS , HEAT TRANSFER AND THERMODYNAMICS

CH: PLEASE WRITE ONE MORE :

ME : SIR YOU CAN EXPAND THERMODYNAMICS TO POWER PLANT AND REFRIGERATION.

CH : OK , So out of these which is your most favourite.

ME : Sir all are same.

CH : OK lets start with SOM

PLEASE FIND THE IMAGES IN THE END I HAVE ATTACHED.

Q.1 ) CH : Consider a cantilever beam shown.

DRAW SFD , BMD

ME : Drawn

CH : Where B.M will be maximum.

ME: Answered

CH : How will you design this beam?

ME : First , we will identify critical sections , then based on type of load we will design for pure bending Rankine theory will be best and for shear plus bending Von Mises theory will be best.

CH : What are critical sections here?

ME : Shown 2 sections

CH : SHOW Bending and shear stress distribution.

ME : Answered

CH : If I make this hollow , what will be changes in the distribution.

ME : Drawn

M2 : Please draw clearly and draw adjacently the solid beam also so that we can compare.

Me : Drawn

CH : Which is stronger.

ME : For same weight , Hollow is stronger , For same outer diameter , solid is stronger.

CH: If I compare two hollow shaft , One is having smaller diameter and large thickness , and other with large diameter and small thickness , but same weight , which will be stronger.

Me : The one with the larger diameter because of large Moment of Inertia.

Ch : So If make a make a hollow beam of very large diameter and thickness in microns , will it be good design.

ME : No sir

CH : WHY?

ME : Sir buckling will take place , localised and direct stress will dominate , but he was asking for more reasons to which I said sorry sir I don’t know.

Q.2) M2 : Draw a tank of water and a tap at top ( please refer diagram in Images).

What should be the flow rate through the tap so that height remains constant.

ME : Answered

M2 : Now I closed the tap , calculate time to empty the tank.

ME : Answered

M2 : Draw the graph between height of water and time.

Me : ANSWERED

Q.3 ) M3 was ready with his question , he has drawn a piston cylinder arrangement , which is the trade mark of BARC interview.

M3: If I remove stoppers calculate P2 , V2 and T2 , which process will be this.

ME : Adiabatic and calculated P2 , V2 , and T2.

M3: Draw P-V diagram.

ME : Drawn

M3 : If I make this Cylinder’s wall of material having infinite thermal conductivity , what process it will be , calculate P2 , V2 and T2

ME: Isothermal and Calculated

M3 : Draw the graph on same P-V diagram

ME : Drwan.

M3 : There is a mistake.

ME: After checking values it was wrong , then I corrected it.

Q.4 ) M4 was ready with its question , and this was the most tricky question.( Please refer Images )

M4 : Draw the graph of T1 and T2 with time.

I drew it wrong.

M4: Are you sure it is right?

I said no , corrected , but this time it was not perfectly correct.

M4 : OK , i give you a hint there is 0 degree celsius water and 0 degree celsius Ice in a bucket what will happen?

I got the hint that no heat transfer can take place between two substances at same temperature regardless of phase and corrected the graph.

CHAIRMAN - OK Dubey ji Thank you and interview was over there.

OUT TIME : 12 : 20

DURATION - 1 hr 25 minutes.

RESULT : SELECTED

BARC interview is one of the FINEST interview you will face in your lifetime.

Here is my story.

My interview was on 24th May 2018 in Mumbai (The only location of interview). Your interview number will depend on how early you get your document verification done.

After document and biometric verification I was asked to wait. My interview was last for morning shift.

When the penultimate candidate was called for the interview, I was asked to sit outside the interview room. The phone was sent. After waiting about 45 minutes (it felt like hours) it was my turn.

The bell rang.

My time to enter the room was noted

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The BARC interview is one of the BEST interviews you will face in your life.

This is my story.

My interview was on May 24, 2018 in Mumbai (the only interview location). Your interview number will depend on how early your document verification takes place.

After the biometric and documentary verification, I was asked to wait. My interview was the last one for the morning shift.

When the penultimate candidate was called for the interview, I was asked to sit outside the interview room. The phone was sent. After waiting about 45 minutes (it felt like hours) it was my turn.

The bell rang.

My check-in time was noted (i.e. 12:35 PM)

I- Can I come in sir?

(There were 5 male and 1 female panelists).

Presidente- Adelante Chetan.

YO- Buenos días.

Desearon que regresara y me pidieron que me sentara.

YO- Gracias señor.

Chairperson- So Chetan, you are from Rajasthan. You must came Mumbai last night.

Me- No sir. I came Mumbai today in the morning by train.

Chairpersons- Trains can be late also still you risked your interview.

Me- I went through the train punctuality and average delay was half an hour for Mumbai.

Chairperson- Should we start now? Hope you are not exhausted.

Me- Sure Sir.

Chairperson- What are the subjects you are the most comfortable with?

Me- SOM, STRUCTURAL ANALYSIS, RCC and SOIL MECHANICS

(They wrote down these subjects on paper.)

Chairperson- Among these on which subject you have least confidence?

Me- Soil Mechanics

Chairperson- OK Chetan. Tell me how will you choose beam and column dimension?

Told about loads and moments acting and then selecting section dimension.

(Seemed not satisfied)

Chairperson- But how will calculate load without span etc. (HINT GIVEN)

Told about deflection criteria to select depth.

(Seemed satisfied)

Chairperson- What is the codal provisions?

Answered

Then asked about factores etc.

Again answered.

Chairperson signalled lady interviewer to ask.

Q- Draw three portal frames. One with both end fixed. Second with fixed and roller and third with Pin and roller support.

Done.

Q- Draw BMD under self load.

Drew 2nd one wrong.

After hint made it correct.

Q- Now draw deflection diagram for 3rd one.

Answerd- wrong

Hint given- Answerd - wrong

Again hint given - Answerd- wrong

Chairperson- Leave it mam. He is not able to answer this. (Signalled other to ask)

Me little nervous.

Q- What is Pre stressed concrete?

Answered

Q- What are types of prestressing?

Answered

Q- Write down the losses for each?

Answerd ( One loss could not recall)

Hint given - Answered

Q- Which has higher losses?

Answered wrong.

Q- Give example you must have seen yesterday.

Railway sleepers

Q- Don't you think it is cumbersome to make such small elements in large numbers?

Told about Hoyer system.

Seemed satisfied.

Q- What is difference between creep and relaxation loss?

Answered

Poker face.

Q- Tell about limiting, full and partial prestressing.

Answered.

Again poker face.

Now other interviewer started.

Drew a doubly reinforced beam.

Q- Calculate its MOR.

Started to calculate neutral axis depth.

Stopped.

Q- What is the need of all this?

Told that we don't know whether section is UR,OR, BALANCED.

Satisfied

Then told full procedure of MOR calculation.

Q- Assumption?

Answered

Q- Use of concrete below NA.

Answered

Q- What is bond strength value?

Didn't know

Asked to guess- Answered

Next interviewer started.

Q- Tell me how pile takes load?

Answerd- Unsatisfied

Hint given - Unsatisfied

Q- Tell how pile friction works?

Answered taking pile element- Unsatisfied

Asked to take soil element- Unsatisfied.

Chairperson- OK leave it. You told your Soil mechanics is weak.

Next interviewer started fluid mechanics out of nowhere.

Q-How will you calculate discharge in running pipe of known dia?

Told - Counter question- unsatisfied

Q- How will you calculate velocity?

Told about pitote tube.

Cross questions.

Finally poker face.

Next interviewer started.

Q- Which steel is used in RCC?

Told

Q- How it is made?

Tried- Not satisfied

Hint given- tried- Poker face

Q- (Referring to doubly reinforced beam question) If a compressive force is acting then what will be the MOR?

Tried.

Hint given- Answered - Satisfied

Chairperson- That's it Chetan. Did you like it?

Me- Very much Sir.

Stood up. Thanked. Left the room.

Exit time was noted (i.e. 1:30 PM).

55 minutes. total.

No esperaba despejar. Después de un mes se declaró el resultado.

Veredicto- SELECCIONADO.

(Si ayudó, entonces vota a favor. Esto me mantiene motivado para escribir aún más).

Feliz lectura…

¡Gracias por A2A!

After completing my Masters in Chemistry from Delhi University, I applied for various PhD programs as well as for BARC. The BARC interview was my second interview before I appeared for the IIT Delhi PhD program. I didn't prepare anything specifically for the interviews, as my semi-final exams had just finished. And when I was selected at IIT Delhi, I was in great spirits. So, I flew from Delhi to Mumbai by air for an interview, and I was more nervous about it than about the interview, as I was flying for the first time also alone. My boyfriend at the time gave me a crash course on how

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Thanks for A2A!

After completing my Masters in chemistry from University of Delhi, I applied for various PhD programmes as well as for BARC. BARC interview was my second interview before that I appeared for IIT Delhi PhD program. I didn’t prepare anything specifically for interviews as my final sem exams were just over. And as I got selected in IIT Delhi , I was in high spirit. So, I travelled from Delhi to Mumbai by air for interview, and I was more nervous because of it rather than for interview as I was flying for the first time that too alone. My then boyfriend gave me a crash course on how to board a flight, to which I complied obediently. :P

So my interview was on 30th May 2013, and I was the last candidate in that committee. Before me many people have got selected from that particular committee so my chances were lean (this is what other candidates told me). My interview started at 6:00p.m, I entered with low expectations and broad smile. I had already made up my mind to perform without any pressure as I got nothing to loose but to gain experience.

Just as I entered and greeted, refreshments arrived so everyone was extra happy during my interview( thats what I think). They asked me to join them and I happily picked one glass of cold drink and sweet as I was hungry since afternoon.

After casual introduction, my interview started with the chairman sir asking meaning of my name? This question I face in every interview/viva/introduction, so I explained calmly that my name can be interpreted in two ways, one meaning is ‘the creation which is meant to win’ and second is ‘face of victory’.

Chairman sir then asked me to jot down 4–5 topics I am more confident in. I honestly told them that I did not get any time to prepare but I find spectroscopy, quantum, and stereo-chemistry fields interesting. One topic was still remaining, for which ma’am(only lady member ) added general chemistry and I agreed.

Then chairman sir asked one member to ask questions and first question was related to quantum chemistry, he asked me to derive electron in a circle wave equation, asked Hamiltonian equations, operators etc. He was happy with the answers and then other member took charge , he asked few questions about NMR spectroscopy, basic principle, peak positions of few functional groups and TADAA ..

Later ma’am asked me how buffers work and derive equations for the same, I explained the definition, however was hesitant in writing equations as this topic was in grads I was unable to recall the equations. The committee helped me with equations and to my surprise I was able to derive equation. Chairman sir asked few logical questions. for ex. , why is pH of water slightly acidic even in pure form.

Oh, did I mention my white slip( confirmation letter) was signed by chairman within half an hour after me entering the room. Then they took a look on my marksheets, and were amazed to see that I got distinction in painting in my highschool, and me being me blabbered that I can sketch with pen in five minutes . So, I made a sketch of ma’am as asked. And my interview ended on a light note.

My interview went for one and half hour. Finally chairman sir congratulated me and asked me to do well in future. He asked with whom you have come and whom will you tell first to which I answered “ I have come alone and obviously I will tell my mother first!”. The committee members were very cordial and humble. As I was last candidate everyone left the room together and took the lift for ground floor and resumed talking to me, I was staying on 8th floor of same building but didn’t interrupted out of courtesy. Two of the members again congratulated me outside the building and praised that how I came all by myself and made my mother proud. :)

After BARC interview , I appeared half heartedly in JNCASR and IISC interviews, because I had already made up my mind that I will join BARC.

p.S. The interview was around three and half years ago, and thus I am updating my answer as I recall more info/questions asked. :)

For tips please go through my previous answer Vijayakriti Mishra's answer to How do I prepare for the BARC (OCES) interview for chemistry?

Good luck!

After entering panel -1, there were 4 members with the chairman sitting in the center. The president said to sit down. The entire interview was in Hindi. He started asking questions about my university. He asked that one of the former directors of BARC is from NIT. PATNA. But I said I don't know. He then said "Dar lagg raha h" (Are you scared). I said no. He said "Jo darr gaya samjho marr gaya" (Everyone laughed). And he asked whose dialogue is this. I said I forgot (because I was nervous). The president said Arrey ye bhi nai aata. He told me that our questions are available on the website so you know everything, but I completely refused.

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After entering in panel -1 , there were 4 members with the chairman sitting at the centre.The chairman said sit down.Whole interview was in hindi.He started asking questions about my college.He asked that one of BARC former director is from NIT PATNA.But i said don't know.He said then “Dar lagg raha h”(Are you scared).I said No.He said “Jo darr gaya samjho marr gaya”(All laughed).And asked whose dialogue is this.I said i forgot(As i was nervous) .Chairman said Arrey ye bhi nai aata. He told that our questions are available on website so you know everything.But i refused completely.He told me to write subjects on sheet after writing HT SOM THERMO FM.I asked how many subject i should write.He told you can write any number of subjects.I stopped on 4 .As i knew they will screw me if i write more.

In HT the question was made very tricky by asking how much drop will happen.When i answered with Fourier law.He remained silent. He asked about flux and i answered.After sometime he went in depth and i gave up.

In SOM they asked beam design, i said we have to find reactions .He allowed me to do Macauleys method.I did and finally he was closely observing and said yes you have 4 equations and 4 unknowns and it can be solved easily.Now he said to design.He asked me where is critical point ,i said at the ends or at the centre. He said assume at centre. I said we have to draw mohr's circle from point to point to get maximum shear.One member said why you want maximum shear.I said because ductile material will be designed on max. shear theory.After drawing mohrs circle of some points ,in between too many question why you drawn like this.I answerd all.When i used to answer they remained silent.But when i made mistakes they come with counter logic.Now they made me draw shear and bending stress distribution by assuming it as rectangular beam. In SOM they asked nearly for 40 min.

In THERMO , they asked velocity and acceleration vs time . I said acceleration variation depend on nature of pressure variation in cylinder ,he remained silent.I was trying but i was not completely sure about diagram ,i gave logic that intially it will be free fall so graph starts with g, but when a member was trying to counter my diagram, chairman stopped him and asked me to draw PV diagarm. I drew and he asked why adiabatic. I said very fast process. Then he asked why are you telling that it will be isobaric after adiabatic i explained by FBD and said during expanding temperature inside cylinder drops and finite temperature difference occurs between cylinder and atmosphere so heat flows inside. He asked me to write equation of curves and he said p=C for isobaric (Are you sure) .I said yes. I don't know why they remain silent sometimes and counter your answer sometimes.

In FM i was going shourtcut and made some mistakes and he said don't take shortcut.With their help i explained V=0 in Air case.But not able to explain oil and water velocity. They said you can go now.

Interview duration was 1hr 20 min. Which was highest for any candidate in 2nd half that day. But duration is not suriety for selection.

Edit: Result is out and i am selected in BARC

If someone wants to ask any doubt from above, you can do so in comment section.

I will go through the entire process, starting from the reporting formalities to the actual interview. Before I begin, here are some preliminary details:

Date of interview: 1st June 2018

Venue: Anushkatinagar, Mumbai

Qualification criteria: BARC Online exam

Discipline: Electronics

Reporting:

We were asked to report to the BARC training school hostel at 9:00 am sharp. The process started with instructions from the staff on how to fill out the forms that were provided to us when we got there. This was followed by verification of the document, after which a green voucher was provided. It contained the int

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I will go through the entire process, from the formalities of the report to the actual interview. Before we begin, here are some preliminary details:

Interview Date: June 1, 2018

Location: Anushkatinagar, Mumbai

Marking Criteria: BARC Online Exam

Discipline: Electronics

Reports:

We were asked to report to the BARC training school hostel at 9:00 a.m sharp. The process started with instructions from the staff as to how to fill up the forms which were provided to us when we reached there. This was followed by document verification after which a green slip was provided. It contained the interview committee number and the my sequence in that committee. Refreshments were provided and we were asked to wait in the adjoining hall. My turn came around 11:30.

Interview:

This will be more of a description than a dialogue as I don't remember the exact events.

As soon as I entered, I was asked to sit down and the usual formalities were done with. There were 5 interviewers, however only 2 of them were involved in the entire discussion.

They started by asking me five subjects in which I was comfortable. My subjects were Digital Circuits, Signals and Systems, Analog and Digital Communication, Analog Circuits and VLSI. I was quizzed on three of them.

They started with Digital Circuits. It was a design question. I was given a square waveform and was asked to measure the ON time of every pulse and display it in human readable form. In between they asked standard questions regarding sequential circuits. Eg : difference between synchronous and asynchronous circuits, preset and clear inputs, race conditions. After a discussion of about 30–35 minutes, they moved on to the next subject.

Next up was Signals and Systems. The questions were basic. They first asked me to draw various periodic waveforms and then asked me to explain the difference between those in terms of frequencies present in them (Fourier series). They then moved on to ask about power of those waveforms and I was asked to derive the power of all (after making sure that I knew the difference between energy and power). This discussion lasted for about 15–20 minutes.

The last part on Analog Circuits was quick (about 5–10 minutes). I was shown an amplifier circuit and asked to identify the specific type of amplifier. I was asked about the role of each of the components used in the circuit. The discussion then moved towards operational amplifiers (OP-AMPs) and I was asked about the frequency response of open loop and closed loop OP-AMP circuits. It was lunchtime by then and the interview ended with them having a hearty laugh when I made a mistake drawing the frequency response curves asked earlier. The mistake was a very basic one and I realized it after they burst out as if they were waiting for me to make that mistake.

That was about it. The interview lasted a total of 60–65 minutes. Some concluding remarks from my side are:

  1. It's more of a discussion rather than an interview. The interviewers helped me whenever I was stuck and gave subtle hints as to what the solution could be. It's important you catch those. They are not looking for some 'know-it-all' but someone who can build the solution from scratch and improve upon it.
  2. Don't be afraid to suggest any improvements on your current solution which you think will increase the efficiency. That's what an engineer does and the interviewers are more than happy to listen to your ideas.
  3. Keep your cool when you are unable to answer some of the questions. This might affect the rest of your interview. The difficulty level of questions will keep on increasing until you tap out. So don't panic if you are unable to answer some.
  4. Last but not the least, enjoy the process. The nervousness you have will vanish within 5–10 minutes after the interview begins.

All the best!

PS: I haven't described in detail the answers I gave to the questions asked. This is to keep the experience general enough for other people so that they don't have to read unnecessary technical details.

If you need more details feel free to message me.

Name - Vikas Pandey

Branch - Mechanical Engineering

Date of Interview - 23-05-2018

Duration - 1 hr

There were 6 panels for Mechanical Engineering my interview was in panel no. 5.

The interview starts with general discussion about where are you form etc for making me comfortable. This was my 2nd time when i was going to appear in BARC inteview. I appared in BARC inteview in 2017 also and I got 99.99 percentile in BARC online test in 2017.

The panel was very friendly and supportive. They will also give you clues if you are missing some points. (Try to remember the concepts through the suggestions provided by int

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Name: Vikas Pandey

Branch - Mechanical Engineering

Interview date - 23-05-2018

Duration - 1 hour

There were 6 panels for Mechanical Engineering, my interview was on panel no. 5.

The interview begins with a general discussion about where you are, etc. so that I feel comfortable. This was the second time he was going to appear on the BARC interview. I also appeared in the BARC interview in 2017 and scored 99.99 percentile in the BARC online test in 2017.

Panel was very friendly and supportive. They will also give you hints if you are missing some points. ( Try to recall the concepts through the hints provided by inteviewer) My complete inteview was in Hindi. There is no effect of language on your selection in BARC.

My favourite Subjects were :

1. HT

2. SOM

3. RAC

4. TD

They asked me which one is your most favourite.

I said sab theek theek hi hai.

Q.1. One vertical and one horizontal plate both are maintained at 100 C and are identical, surrounding is at 25 C. Which one will cool Faster and why ? ( Heat transfer is taking place from both side of plates)

Q.2. What will be the temperature profile and why the shape of profile is like that ?

Q.3. What will be the velocity profile and why the shape is like that ?

Q.2. How will you calculate thermal conductivity ?

Q.3. What is Rayleigh no. ? What is Grashof No. ? What is Prandtle no. ?

Q.4. Proof of Grashof no. formula from Basic definition ? What is beta in that ? What is alpha ? ( coefficient of thermal exapnsion ) What is the difference between alpha and beta ?

Q.5. There was an simply supported beam with loading conditions like two point load of same intensity are working at distance of L/4 from both the supports, What will be the SFD, BMD ? Shape of elastic curve ?

Q.6. From where this beam will fail and why ? ( lot of discussion in this question because between the two loads bending moment will remains constant and they were asking the exact location of point of failure )

Q.7. What will be the direct Shear stress ? ( They asked this question because i used the term direct shear stress to answer the previous question )

Q.8. If cross section is Square what will be its (SF) variation ?

Q.9. They have drawn some random cross section and asked which one you will choose and why ? (Basically you have to check area distribution with respect to neutral axis )

Q.10. Which one you will choose between solid and hollow cross section and why ?

Q.11. On which principal domestic refrigerator works ?

Q.12. Draw VCRS cycle and explain all the processes one by one ?

Q.13. Why you are using compressor after evaporator ? Can you send the refrigerant directly to condensor after evaporator ? Why not explain ? ( They wants to know the necessity of compressor )

Q.14. What is exactly happening during throttling why temperature and pressure is dropping during throttling ? ( I explained them all the reason whatever I know like J. Th. Coefficient , Flow through restricted pass, effect of acceleration etc.) They were not satisfied with my answers. The question was asked to last year in BARC inteview. Till date i don't know what they were want to listen as an answer for this question.

Q.15. Air ko as a refrigerant use kar sakte ho ? kyu nahi kar sakte ho ? Value of J. Th. coefficient for air ?

Q.16. Ye evaporator upper kyu hota hai fridge me ??

Q.17. Ye HAIER Company hai unlogo ke evaporator neeche kyu laga diya ? Explain ?

Q.18. Ek container hai. usme wheel lage hue hai friction less surface pe rakha hai,( mujhe 2D view dikhaya tha ) Container ke ander P pressure maintained hai left side wall ka area 2A hai aur right side wall ka area A hai aur top surface inclined aur bottom surface flat hai batao Container move karega ? Explain your answer with reason ?

Result: I got 600 marks in interview out of 1000 and the final selection cut off was 601 marks. I was the first candidate in waiting list, So they offered me the post of JRF later for a period of 2 years but I didn't joined.

Note: It is true that BARC inteview is one of the toughest inteview i have ever faced. The reason is that in BARC Inteview they will not going to ask a lot of questions to you. They will ask 2- 3 questions per subject but lots of cross questions will be there based on your answers. You can see in my inteview they were asking “why” almost after each and every answer, so selection of words while answering is very very important. In BARC Inteview generally they will ask 4 or maximum 5 subjects depends on the panel. Some panel will ask for 4 subjects and some are for 5 subjects. So prepare 4–5 subjects thoroughly. It is very rare in BARC inteview that they will ask questions other than your favourite subjects generally they ask question from your favourite subjects only. Please don't choose Production Engineering as your favourite otherwise they will ask you to choose another subject instead of PE, because there is no practical use of production engineering in BARC. Another very important suggestion for Mechanical Engineering students is that don't choose Material Science as your favourite subject unless and until you have read any standard book of Material Science like William D. Callister. I am telling this to you because I told Material Science as my favourite subject in my BARC 2017 inteview. I can't explain my situation when there were asking questions from MS. Never Ever choose Maths as a favourite subjects in interviews like BARC, ISRO and DRDO. Otherwise you will regret later.

Thanks.

It should start from when you have completed the interview date. I was selected for the interview through GATE in 2017. Then I have chosen the last date (June 16) for my interview. I wasn't sure if I should go to an interview or not because I heard that they ask very difficult questions related to your core. But in the end I decided that we see what is happening, what will happen. I will not be selected, but I want to see if it is really difficult or just a hoax. So I went there. My interview was at 8 in the morning. I was the first boy in the 2nd penalty (there were two penalties). I was chil

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I should start from beginning from when I have filled the date of interview . I have been selected for interview through GATE in 2017. Then I have chosen the last date (16th june) for my interview. I was not sure that I should go for interview or not because I have heard that they ask very tough questions related to your core. But at last I made my mind that lets see what is happening, what will happen I wont be selected, but I want to see is it really tough or just a hoax. So I went there. My interview was at 8′o clock morning. I was first guy in 2nd penal ( there were two penal ). I was chill because I was have no expectation from here and so I have not prepared anything for the interview. They called my name, I went to the room where the 6 members penal were sitting on a round table. I asked the “May I come in sir”? They told “yes come in”. Then I sat and they asked tell us about yourself. Then I told them all about myself.

But after that surprisingly they asked why do you want to join BARC. It was surprise because generally they don’t ask such questions. But I made a good answer that “Sir I am interested in research field and I want to do a research which will benefit the nation immediately and blah blah blah…..” .

Then they asked me some more questions from my life and then told me to write 5 subjects of my own choice so that they can ask questions from them.

I wrote only four subjects ( Mass Transfer, Chemical Reaction Engineering, Heat Transfer, Thermodynamics ).

First question they asked from Mass Transfer. “Suppose I keep water in a test tube half filled and put ammonia gas on the other half and close the test tube what will happen”? I answered

Then they asked “what will happen if I will shake the test tube for a minute”?

Next they asked me to draw the concentration profile of mass transfer in two phase. ( I will recommend that please study all the profiles and charts carefully for BARC interview they focus on these things very much ).

After that they started twisting the question and I kept answering according to my understanding. Wherever I was stuck they were helping and explaining the questions properly. After a few questions I felt that they have gone very deep and I am not able to answer them. Then they changed their questions.

Now they asked from Thermodynamics. “If a cylinder is filled with nitrogen gas at 15 bar pressure and at room temperature and I am releasing the gas to atmosphere suddenly so that pressure becomes half then what will be the temperature ”? They given me page and pencil to solve. I was not able to solve but I have told them the approach then they said OK move to the next question. ( Guys see even if you are not able to solve any question then don’t panic just give a proper explanation of way of solving the questions, Like in my question that “the temperature will decrease because of pvt relation and joule-thompson effect”. Because they check your knowledge not the problem solving skill. )

After that so many questions were there. I don’t remember much. They have asked from Chemical Reaction Engineering also. I have answered the questions by relating them with the basics. And then finally my interview overs. I left the room by saying thank you to all of the panel members.

My interview goes for 1 hour and 8 minutes. The smallest among all the persons selected. And from those 1 hour and 8 minutes 15 minutes they have asked me only HR questions what they don’t ask generally. So I will say definitely that duration of interview doesn't matters. Only the right approach to the answer matters.

So finally result came and I was selected. I have not expected that I will be selected because I thought I have not answered all the questions properly. But now I know that no one can answer all the questions very well so try your best and just stick with the basics.

So my suggestion for all persons going for BARC interview is that “Don’t think that its very hard. Its easy and you just have to make your mind that I know the basics then I can at least tell them the way of solving the questions. And only this much matters.”

So guys Best of Luck to you all.

Thank You.

Believe me I was a different guy before the interview. My way of approaching the questions totally changed . I din't prepare for the interview as I have been continuously studying for two last year but I do looked upon the questions that were asked previously.

The interview panel consists of six members (including the chair). All experts in their field. When I walked in and wished them, they asked me to take a seat. With a little introduction, the president handed me an A4 sheet and said "tell me the pressure at point A in a container." I could not understand the figure because I have never seen any

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Trust me, I was a different guy before the interview. My way of approaching the questions totally changed. I did not prepare for the interview as I was studying continuously for two years last year, but I did look at the questions that were asked previously.

The interview panel consist of six member (including the chairman) . All expert in their field . As I entered and wished them they asked me to have a seat . With little introduction , The chairman handed me an A4 sheet and said “tell me the pressure at point A in a vessel”. I was not able to understand the figure as I have never seen any vessel of that kind and was struggling but then chairman said “ beta turn it upsidedown, u r holding it wrong ” :P .

I gave the answer to many questions , did silly mistakes too and some I was not able to answer and have to rely patiently for their hint. Believe me they were the most Frank interviewer . They won't gave up on u untill u urself give up.

They mainly asked the core subjects and questions were very basic to bit advanced.

What i like most was they they were relating things with what u have already studied in school like Pascal law Newton law hydrostatic paradox . Starting from the very basic question they will take u to the the advanced level Obviously I was not able to answer the advanced one but again they will hint u.

Interview went on for more than an hour. In between they had offered me tea n snacks . I refused as I want to finish the interview and catch the train for Hyderabad to meet my girlfriend as it has been eight months when we last met. At last the interview finish .

chairman : how r u feeling now

Me : sir it is an enriching experience . I get to learn many things.

Chairman gave me a smile and I quickly vanished.

After reaching home (Delhi)

Father : how was your interview ?

Me: terrible !! They grilled me for more than an hour.

Father : when will the result come?

Me : first week of July but don't make high hopes that I will make it.

(On the day of result)

Father : beta u have made it.

P.S. : I don't know why I was selected……anyway i was selected!!

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